GET THE S!!!!
The S features the incredible ZR trem and it is one hell of an awesome trem... I think even though ppl complain abt it being heavy, it really works well and has a very smooth feel.
However, do take note, that if your trem malfunctions, you çan't retrofit any floyd into your guitar and you've got to order spare parts to replace the faulty ones... and its likely that no tech in Singapore would agree to setup/repair your trem coz there's so little info/experiecne abt it...
Cheerio!
Daniel